Power
Power is the rate at which work is done or the amount of energy transferred or converted per unit time. It is a measure of how quickly energy is transferred or converted. The SI unit of power is the watt (W), which is equal to one joule per second.
Formulas for Power
The formula for calculating power is:
Power (P) = Work (W) / Time (t)
Another formula for power is:
Power (P) = Force (F) x Velocity (v)
Units of Power
The unit of power is the watt (W), named after the Scottish engineer James Watt. It is defined as one joule of energy transferred or converted per second.
Another commonly used unit of power is the horsepower (hp). One horsepower is equal to 746 watts.
Examples of Power
Examples of power in everyday life include the power generated by a car engine, the power output of electrical appliances, and the power generated by renewable energy sources such as wind turbines and solar panels.
Study Guide
- What is power and how is it measured?
- What are the formulas for calculating power?
- What are the units of power and how are they defined?
- Provide examples of power in everyday life.
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